The Vevor auto darkening welding lens combines a fixed Shade 11 with true color technology for a clearer, more natural view while welding. Dual arc sensors respond quickly to help reduce arc glare and improve eye protection during use. Its gold-coated surface is designed for durability and reduced eye strain. The 4.25" x 2" size fits most standard welding helmets, including sugar scoop hoods, pancake helmets, and handheld shields. Solar power with a built-in lithium battery supports reliable long-term performance.